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Na2HfGeSe5

Alexandria ALEX

Alex-ID: agm005149303 · Space group: Cmc2_1 (#36)

Alexandria Database API

Basic Information

Formula
Na2HfGeSe5
Alex-ID
agm005149303
Elements
4
Sites
18
Space group
Cmc2_1 (#36)
Crystal system
orthorhombic
Volume
475.68
ų
Cell a
3.8619
Å
Cell b
9.3909
Å
Cell c
13.4026
Å
α angle
90.00
°
β angle
90.00
°
γ angle
101.87
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Na2HfGeSe5
Na
4.00 · 22.2%
Hf
2.00 · 11.1%
Ge
2.00 · 11.1%
Se
10.00 · 55.6%

Energy & Stability

Energy above hull
0.0430
eV/atom
Formation energy
-0.9201
eV/atom
Corrected total energy
-85.8847
eV
Raw total energy
-85.8847
eV

Electronic Structure

Indirect band gap
0.4739
eV
Direct band gap
0.5145
eV
DOS at Fermi level
0.1005
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

ABC2D5_224_spg36

Decomposition

Na2Ge2Se5 Na2HfSe3 HfSe2

Computed at

2023-01-16 09:39:50.946710

Citation

Alexandria website
https://alexandria.icams.rub.de/
Attribution

The crystal structure and related material properties of this entry were obtained from the Alexandria database (Alex-ID: agm005149303).

Reference

Th. Cavignac, J. Schmidt, P.-P. De Breuck, A. Loew, T. F. T. Cerqueira, H.-C. Wang, A. Bochkarev, Y. Lysogorskiy, A. H. Romero, R. Drautz, S. Botti and M. A. L. Marques. AI-Driven expansion and application of the Alexandria database. J. Phys. Mater. 9, 025014 (2026). https://doi.org/10.1088/2515-7639/ae6620

BibTeX 
@article{Cavignac2026Alexandria,
  author  = {Cavignac, Th{\'e}o and Schmidt, Jonathan and De Breuck, Pierre-Paul and Loew, Antoine
             and Cerqueira, Tiago F. T. and Wang, Hai-Chen and Bochkarev, Anton
             and Lysogorskiy, Yury and Romero, Aldo H. and Drautz, Ralf and Botti, Silvana
             and Marques, Miguel A. L.},
  title   = {{AI}-Driven expansion and application of the {A}lexandria database},
  journal = {Journal of Physics: Materials},
  year    = {2026},
  volume  = {9},
  number  = {2},
  pages   = {025014},
  doi     = {10.1088/2515-7639/ae6620},
  url     = {https://doi.org/10.1088/2515-7639/ae6620}
}

3D Crystal Structure Rendering

Loading 3D structure…

Style: Ball & Stick
Raw CIF Data 
# CIF generated by HEAS from Alexandria entry agm005149303
data_agm005149303
_cell_length_a     3.86191
_cell_length_b     9.39087
_cell_length_c     13.40258
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  101.86583
_cell_volume       475.68127
_symmetry_space_group_name_H-M 'P 1'
_symmetry_Int_Tables_number 1
loop_
_symmetry_equiv_pos_as_xyz
  'x, y, z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
  Na1 Na 0.88234 0.76468 0.82918 1.00000
  Na2 Na 0.10917 0.21833 0.65997 1.00000
  Na3 Na 0.11766 0.23532 0.32918 1.00000
  Na4 Na 0.89083 0.78167 0.15997 1.00000
  Hf1 Hf 0.77871 0.55741 0.54337 1.00000
  Hf2 Hf 0.22129 0.44259 0.04337 1.00000
  Ge1 Ge 0.57002 0.14004 0.91665 1.00000
  Ge2 Ge 0.42998 0.85996 0.41665 1.00000
  Se1 Se 0.35287 0.70575 0.00111 1.00000
  Se2 Se 0.69919 0.39837 0.89568 1.00000
  Se3 Se 0.50548 0.01097 0.76998 1.00000
  Se4 Se 0.29306 0.58613 0.67503 1.00000
  Se5 Se 0.94276 0.88551 0.53300 1.00000
  Se6 Se 0.64713 0.29425 0.50111 1.00000
  Se7 Se 0.30081 0.60163 0.39568 1.00000
  Se8 Se 0.49452 0.98903 0.26998 1.00000
  Se9 Se 0.70694 0.41387 0.17503 1.00000
  Se10 Se 0.05724 0.11449 0.03300 1.00000
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